QUOTE(robeng @ Nov 3 2009, 08:42 PM)
p/s: To LeechFever: Hybrid is just a beginning. Prius is just a very simple eg to understand. Not to mention other alt energy like biogas. They wont come up with all these things at 1st place if they have same thinking like u.
HERE is very simple article bout RE.
I have seen discovery channel. I have learn what I can about renewable energy via courses, articles and documentaries. I have seen car running from hydrogen to nuclear. Even the attempt to harness solar power and transmit them wirelessly to earth from space. Frankly it is still very far in the future for a renewable energy to actually be commercially produced. Problem with renewable energy is the low amount of energy output from them. Take hydrogen car for example. Sure, there are already hydrogen pump station for it. But considering the amount of people driving it and the power it takes to separate hydrogen and oxygen via solar power......very low. Until I see a functioning consumer plane or a cargo ship that actually runs on this clean energy, I would have my doubt on its impact on economy globally.
Hybrid is actually a simple concept that has been thought out long before. Only problem is the battery design which usually like laptop battery doesnt last long, heavy and to replace em actually consume more money that saving gas in the long run. In the end it still depends on gas to run and recharge the battery. Even a fully electric car concept is pointless if the charging source came from a petroleum power plant. Have anyone thought of the toxic effect from the battery itself if it is to be thrown?
"Biogas typically refers to a gas produced by the biological breakdown of organic matter in the absence of oxygen." So where does this organic matter came from? Shits? Food wastage? How much amount of wastage do we need to obtain sufficient enough power to power the whole world? Sure biogas is cheap now, but in the future once demand soar, price increase, source drop and in the end, pretty much the same as petrol.
Geothermal, wave, wind? I think they forgot hydro. Sure it is clean, but consider the amount of deforestation, land, wild habitat destruction and money needed respective to the amount of energy produced.
But not to say it's impossible since there is already a 'sport' car fully powered by a battery, but lets face it, it would take another half a century for renewable energy to be fully technologically utilized. Until then we still need petrol.
This post has been edited by LeechFever: Nov 3 2009, 10:46 PM